Cannot select custom folder for report files in AppImage

[fvacek]

I was not able to select custom folder for report files in AppImage (folder is selected but the button for copying reports to the selected folder is missing)

[fvacek]

Copy button was removed as confusing, user can use OS tools to make dir copy, QE was doing this previously, because source QML files weren't under one single directory, but they are in QE3.